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-rw-r--r--src/shared/conf-files.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/src/shared/conf-files.c b/src/shared/conf-files.c
new file mode 100644
index 0000000000..019fadcf5e
--- /dev/null
+++ b/src/shared/conf-files.c
@@ -0,0 +1,151 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <dirent.h>
+
+#include "macro.h"
+#include "util.h"
+#include "missing.h"
+#include "log.h"
+#include "strv.h"
+#include "hashmap.h"
+#include "conf-files.h"
+
+static int files_add(Hashmap *h, const char *path, const char *suffix) {
+ DIR *dir;
+ struct dirent buffer, *de;
+ int r = 0;
+
+ dir = opendir(path);
+ if (!dir) {
+ if (errno == ENOENT)
+ return 0;
+ return -errno;
+ }
+
+ for (;;) {
+ int k;
+ char *p;
+
+ k = readdir_r(dir, &buffer, &de);
+ if (k != 0) {
+ r = -k;
+ goto finish;
+ }
+
+ if (!de)
+ break;
+
+ if (!dirent_is_file_with_suffix(de, suffix))
+ continue;
+
+ if (asprintf(&p, "%s/%s", path, de->d_name) < 0) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (hashmap_put(h, file_name_from_path(p), p) <= 0) {
+ log_debug("Skip overridden file: %s.", p);
+ free(p);
+ }
+ }
+
+finish:
+ closedir(dir);
+ return r;
+}
+
+static int base_cmp(const void *a, const void *b) {
+ const char *s1, *s2;
+
+ s1 = *(char * const *)a;
+ s2 = *(char * const *)b;
+ return strcmp(file_name_from_path(s1), file_name_from_path(s2));
+}
+
+int conf_files_list_strv(char ***strv, const char *suffix, const char **dirs) {
+ Hashmap *fh = NULL;
+ char **files = NULL;
+ const char **p;
+ int r = 0;
+
+ assert(dirs);
+
+ fh = hashmap_new(string_hash_func, string_compare_func);
+ if (!fh) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ STRV_FOREACH(p, dirs) {
+ if (files_add(fh, *p, suffix) < 0) {
+ log_error("Failed to search for files.");
+ r = -EINVAL;
+ goto finish;
+ }
+ }
+
+ files = hashmap_get_strv(fh);
+ if (files == NULL) {
+ log_error("Failed to compose list of files.");
+ r = -ENOMEM;
+ goto finish;
+ }
+ qsort(files, hashmap_size(fh), sizeof(char *), base_cmp);
+
+finish:
+ hashmap_free(fh);
+ *strv = files;
+ return r;
+}
+
+int conf_files_list(char ***strv, const char *suffix, const char *dir, ...) {
+ char **dirs = NULL;
+ va_list ap;
+ int r;
+
+ va_start(ap, dir);
+ dirs = strv_new_ap(dir, ap);
+ va_end(ap);
+ if (!dirs) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!strv_path_canonicalize(dirs)) {
+ r = -ENOMEM;
+ goto finish;
+ }
+ strv_uniq(dirs);
+
+ r = conf_files_list_strv(strv, suffix, (const char **)dirs);
+
+finish:
+ strv_free(dirs);
+ return r;
+}